Fapping as
fast as you can, when your
hand accidentally slips off the rails and you punch yourself in the crotch, thus demolishing your nutsack.
May result in bruising and/or infertility.
girl 1 "what are you doing tonight?"
girl 2 "I dunno. My bf pissed me off so I might go home and faphammer him..."
"I faphammered myself so hard last
night, I think I ruptured a testy."
Girl "I hear you like it rough"
Boy " yeah, faphammer me."
"I would rather faphammer myself, than listen to
one direction."
"faphammering yourself really is an erection rejection."